INFO: task syz.8.6278:25577 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.6278      state:D stack:17448 pid:25577 tgid:25576 ppid:22276  task_flags:0x440140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 __bch2_two_state_lock+0x1ea/0x370
 bch2_readahead+0x94f/0x1100
 read_pages+0x17a/0x580
 page_cache_ra_order+0x8ca/0xd40
 filemap_get_pages+0xb22/0x1ea0
 filemap_splice_read+0x581/0xc60
 splice_direct_to_actor+0x4a9/0xcc0
 do_splice_direct+0x181/0x270
 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9488b8ebe9
RSP: 002b:00007f9489910038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f9488db5fa0 RCX: 00007f9488b8ebe9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008
RBP: 00007f9488c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000200201005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9488db6038 R14: 00007f9488db5fa0 R15: 00007ffcf57b1f48
 </TASK>
INFO: task syz.8.6278:25599 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.6278      state:D stack:26936 pid:25599 tgid:25576 ppid:22276  task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 truncate_inode_pages_range+0xa77/0xda0
 truncate_setsize+0xcf/0xf0
 bchfs_truncate+0x622/0xc20
 notify_change+0xb36/0xe40
 do_truncate+0x1a4/0x220
 do_ftruncate+0x489/0x540
 __x64_sys_ftruncate+0x92/0xf0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9488b8ebe9
RSP: 002b:00007f9486df6038 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f9488db6090 RCX: 00007f9488b8ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f9488c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9488db6128 R14: 00007f9488db6090 R15: 00007ffcf57b1f48
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5671:
 #0: ffff888023da20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
2 locks held by kworker/u13:1/21343:
 #0: ffff888136639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140
 #1: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run4+0x19c/0x4a0
1 lock held by syz.8.6278/25577:
 #0: ffff888113a30a80 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: page_cache_ra_order+0x318/0xd40
2 locks held by syz.8.6278/25599:
 #0: ffff888107914428 (sb_writers#12){.+.+}-{0:0}, at: do_ftruncate+0x42a/0x540
 #1: ffff888113a308e0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: do_truncate+0x171/0x220
5 locks held by bch-reclaim/loo/25596:
3 locks held by syz.1.6831/27538:

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 27542 Comm: syz.0.6833 Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__lock_acquire+0x74/0xd20
Code: c1 31 c9 48 3d 10 03 64 93 41 0f 45 c8 89 4c 24 0c 8b 0d ff 33 0e 18 85 c9 0f 95 c0 83 fe 08 0f 92 c2 08 c2 0f 84 55 01 00 00 <44> 89 cd 83 fe 01 48 89 3c 24 77 0c 89 f0 48 8b 44 c3 08 48 85 c0
RSP: 0018:ffffc90008877028 EFLAGS: 00000002
RAX: ffffffff99afba00 RBX: ffffffff8e139ee0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8881063e0000
RBP: ffffffff8172c195 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90008877278 R11: ffffffff81ac3870 R12: 0000000000000002
R13: ffffffff8e139ee0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f5fe4d956c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffd CR3: 000000010e208000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x120/0x360
 unwind_next_frame+0xc2/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 save_stack+0xf5/0x1f0
 __reset_page_owner+0x71/0x1f0
 free_unref_folios+0xdbd/0x1520
 folios_put_refs+0x559/0x640
 shmem_undo_range+0x49e/0x14b0
 shmem_evict_inode+0x272/0xa70
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 __fput+0x68e/0xa70
 fput_close_sync+0x119/0x200
 __x64_sys_close+0x7f/0x110
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fe3f8d84a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007f5fe4d94e00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f5fe3f8d84a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000004424
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005
R13: 00007f5fe4d94ef0 R14: 00007f5fe4d94eb0 R15: 00007f5fd9c00000
 </TASK>
